2 * Original code based Host AP (software wireless LAN access point) driver
3 * for Intersil Prism2/2.5/3 - hostap.o module, common routines
5 * Copyright (c) 2001-2002, SSH Communications Security Corp and Jouni Malinen
7 * Copyright (c) 2002-2003, Jouni Malinen <jkmaline@cc.hut.fi>
8 * Copyright (c) 2004, Intel Corporation
10 * This program is free software; you can redistribute it and/or modify
11 * it under the terms of the GNU General Public License version 2 as
12 * published by the Free Software Foundation. See README and COPYING for
14 ******************************************************************************
16 Few modifications for Realtek's Wi-Fi drivers by
17 Andrea Merello <andreamrl@tiscali.it>
19 A special thanks goes to Realtek for their support !
21 ******************************************************************************/
24 #include <linux/compiler.h>
25 #include <linux/errno.h>
26 #include <linux/if_arp.h>
27 #include <linux/in6.h>
30 #include <linux/kernel.h>
31 #include <linux/module.h>
32 #include <linux/netdevice.h>
33 #include <linux/pci.h>
34 #include <linux/proc_fs.h>
35 #include <linux/skbuff.h>
36 #include <linux/slab.h>
37 #include <linux/tcp.h>
38 #include <linux/types.h>
39 #include <linux/version.h>
40 #include <linux/wireless.h>
41 #include <linux/etherdevice.h>
42 #include <linux/uaccess.h>
43 #include <linux/ctype.h>
48 static inline void rtllib_monitor_rx(struct rtllib_device *ieee,
49 struct sk_buff *skb, struct rtllib_rx_stats *rx_status,
53 skb_reset_mac_header(skb);
54 skb_pull(skb, hdr_length);
55 skb->pkt_type = PACKET_OTHERHOST;
56 skb->protocol = __constant_htons(ETH_P_80211_RAW);
57 memset(skb->cb, 0, sizeof(skb->cb));
61 /* Called only as a tasklet (software IRQ) */
62 static struct rtllib_frag_entry *
63 rtllib_frag_cache_find(struct rtllib_device *ieee, unsigned int seq,
64 unsigned int frag, u8 tid, u8 *src, u8 *dst)
66 struct rtllib_frag_entry *entry;
69 for (i = 0; i < RTLLIB_FRAG_CACHE_LEN; i++) {
70 entry = &ieee->frag_cache[tid][i];
71 if (entry->skb != NULL &&
72 time_after(jiffies, entry->first_frag_time + 2 * HZ)) {
74 "expiring fragment cache entry "
75 "seq=%u last_frag=%u\n",
76 entry->seq, entry->last_frag);
77 dev_kfree_skb_any(entry->skb);
81 if (entry->skb != NULL && entry->seq == seq &&
82 (entry->last_frag + 1 == frag || frag == -1) &&
83 memcmp(entry->src_addr, src, ETH_ALEN) == 0 &&
84 memcmp(entry->dst_addr, dst, ETH_ALEN) == 0)
91 /* Called only as a tasklet (software IRQ) */
92 static struct sk_buff *
93 rtllib_frag_cache_get(struct rtllib_device *ieee,
94 struct rtllib_hdr_4addr *hdr)
96 struct sk_buff *skb = NULL;
97 u16 fc = le16_to_cpu(hdr->frame_ctl);
98 u16 sc = le16_to_cpu(hdr->seq_ctl);
99 unsigned int frag = WLAN_GET_SEQ_FRAG(sc);
100 unsigned int seq = WLAN_GET_SEQ_SEQ(sc);
101 struct rtllib_frag_entry *entry;
102 struct rtllib_hdr_3addrqos *hdr_3addrqos;
103 struct rtllib_hdr_4addrqos *hdr_4addrqos;
106 if (((fc & RTLLIB_FCTL_DSTODS) == RTLLIB_FCTL_DSTODS) && RTLLIB_QOS_HAS_SEQ(fc)) {
107 hdr_4addrqos = (struct rtllib_hdr_4addrqos *)hdr;
108 tid = le16_to_cpu(hdr_4addrqos->qos_ctl) & RTLLIB_QCTL_TID;
111 } else if (RTLLIB_QOS_HAS_SEQ(fc)) {
112 hdr_3addrqos = (struct rtllib_hdr_3addrqos *)hdr;
113 tid = le16_to_cpu(hdr_3addrqos->qos_ctl) & RTLLIB_QCTL_TID;
121 /* Reserve enough space to fit maximum frame length */
122 skb = dev_alloc_skb(ieee->dev->mtu +
123 sizeof(struct rtllib_hdr_4addr) +
128 (RTLLIB_QOS_HAS_SEQ(fc) ? 2 : 0) /* QOS Control */);
132 entry = &ieee->frag_cache[tid][ieee->frag_next_idx[tid]];
133 ieee->frag_next_idx[tid]++;
134 if (ieee->frag_next_idx[tid] >= RTLLIB_FRAG_CACHE_LEN)
135 ieee->frag_next_idx[tid] = 0;
137 if (entry->skb != NULL)
138 dev_kfree_skb_any(entry->skb);
140 entry->first_frag_time = jiffies;
142 entry->last_frag = frag;
144 memcpy(entry->src_addr, hdr->addr2, ETH_ALEN);
145 memcpy(entry->dst_addr, hdr->addr1, ETH_ALEN);
147 /* received a fragment of a frame for which the head fragment
148 * should have already been received */
149 entry = rtllib_frag_cache_find(ieee, seq, frag, tid, hdr->addr2,
152 entry->last_frag = frag;
161 /* Called only as a tasklet (software IRQ) */
162 static int rtllib_frag_cache_invalidate(struct rtllib_device *ieee,
163 struct rtllib_hdr_4addr *hdr)
165 u16 fc = le16_to_cpu(hdr->frame_ctl);
166 u16 sc = le16_to_cpu(hdr->seq_ctl);
167 unsigned int seq = WLAN_GET_SEQ_SEQ(sc);
168 struct rtllib_frag_entry *entry;
169 struct rtllib_hdr_3addrqos *hdr_3addrqos;
170 struct rtllib_hdr_4addrqos *hdr_4addrqos;
173 if (((fc & RTLLIB_FCTL_DSTODS) == RTLLIB_FCTL_DSTODS) && RTLLIB_QOS_HAS_SEQ(fc)) {
174 hdr_4addrqos = (struct rtllib_hdr_4addrqos *)hdr;
175 tid = le16_to_cpu(hdr_4addrqos->qos_ctl) & RTLLIB_QCTL_TID;
178 } else if (RTLLIB_QOS_HAS_SEQ(fc)) {
179 hdr_3addrqos = (struct rtllib_hdr_3addrqos *)hdr;
180 tid = le16_to_cpu(hdr_3addrqos->qos_ctl) & RTLLIB_QCTL_TID;
187 entry = rtllib_frag_cache_find(ieee, seq, -1, tid, hdr->addr2,
192 "could not invalidate fragment cache "
193 "entry (seq=%u)\n", seq);
201 /* rtllib_rx_frame_mgtmt
203 * Responsible for handling management control frames
205 * Called by rtllib_rx */
207 rtllib_rx_frame_mgmt(struct rtllib_device *ieee, struct sk_buff *skb,
208 struct rtllib_rx_stats *rx_stats, u16 type,
211 /* On the struct stats definition there is written that
212 * this is not mandatory.... but seems that the probe
213 * response parser uses it
215 struct rtllib_hdr_3addr * hdr = (struct rtllib_hdr_3addr *)skb->data;
217 rx_stats->len = skb->len;
218 rtllib_rx_mgt(ieee, skb, rx_stats);
219 if ((memcmp(hdr->addr1, ieee->dev->dev_addr, ETH_ALEN))) {
220 dev_kfree_skb_any(skb);
223 rtllib_rx_frame_softmac(ieee, skb, rx_stats, type, stype);
225 dev_kfree_skb_any(skb);
230 /* See IEEE 802.1H for LLC/SNAP encapsulation/decapsulation */
231 /* Ethernet-II snap header (RFC1042 for most EtherTypes) */
232 static unsigned char rfc1042_header[] = {
233 0xaa, 0xaa, 0x03, 0x00, 0x00, 0x00
235 /* Bridge-Tunnel header (for EtherTypes ETH_P_AARP and ETH_P_IPX) */
236 static unsigned char bridge_tunnel_header[] = {
237 0xaa, 0xaa, 0x03, 0x00, 0x00, 0xf8
239 /* No encapsulation header if EtherType < 0x600 (=length) */
241 /* Called by rtllib_rx_frame_decrypt */
242 static int rtllib_is_eapol_frame(struct rtllib_device *ieee,
243 struct sk_buff *skb, size_t hdrlen)
245 struct net_device *dev = ieee->dev;
247 struct rtllib_hdr_4addr *hdr;
253 hdr = (struct rtllib_hdr_4addr *) skb->data;
254 fc = le16_to_cpu(hdr->frame_ctl);
256 /* check that the frame is unicast frame to us */
257 if ((fc & (RTLLIB_FCTL_TODS | RTLLIB_FCTL_FROMDS)) ==
259 memcmp(hdr->addr1, dev->dev_addr, ETH_ALEN) == 0 &&
260 memcmp(hdr->addr3, dev->dev_addr, ETH_ALEN) == 0) {
261 /* ToDS frame with own addr BSSID and DA */
262 } else if ((fc & (RTLLIB_FCTL_TODS | RTLLIB_FCTL_FROMDS)) ==
263 RTLLIB_FCTL_FROMDS &&
264 memcmp(hdr->addr1, dev->dev_addr, ETH_ALEN) == 0) {
265 /* FromDS frame with own addr as DA */
269 if (skb->len < 24 + 8)
272 /* check for port access entity Ethernet type */
273 pos = skb->data + hdrlen;
274 ethertype = (pos[6] << 8) | pos[7];
275 if (ethertype == ETH_P_PAE)
281 /* Called only as a tasklet (software IRQ), by rtllib_rx */
283 rtllib_rx_frame_decrypt(struct rtllib_device *ieee, struct sk_buff *skb,
284 struct rtllib_crypt_data *crypt)
286 struct rtllib_hdr_4addr *hdr;
289 if (crypt == NULL || crypt->ops->decrypt_mpdu == NULL)
292 if (ieee->hwsec_active) {
293 struct cb_desc *tcb_desc = (struct cb_desc *)(skb->cb + MAX_DEV_ADDR_SIZE);
294 tcb_desc->bHwSec = 1;
296 if (ieee->need_sw_enc)
297 tcb_desc->bHwSec = 0;
300 hdr = (struct rtllib_hdr_4addr *) skb->data;
301 hdrlen = rtllib_get_hdrlen(le16_to_cpu(hdr->frame_ctl));
303 atomic_inc(&crypt->refcnt);
304 res = crypt->ops->decrypt_mpdu(skb, hdrlen, crypt->priv);
305 atomic_dec(&crypt->refcnt);
308 "decryption failed (SA= %pM"
309 ") res=%d\n", hdr->addr2, res);
311 RTLLIB_DEBUG_DROP("Decryption failed ICV "
312 "mismatch (key %d)\n",
313 skb->data[hdrlen + 3] >> 6);
314 ieee->ieee_stats.rx_discards_undecryptable++;
322 /* Called only as a tasklet (software IRQ), by rtllib_rx */
324 rtllib_rx_frame_decrypt_msdu(struct rtllib_device *ieee, struct sk_buff *skb,
325 int keyidx, struct rtllib_crypt_data *crypt)
327 struct rtllib_hdr_4addr *hdr;
330 if (crypt == NULL || crypt->ops->decrypt_msdu == NULL)
332 if (ieee->hwsec_active) {
333 struct cb_desc *tcb_desc = (struct cb_desc *)(skb->cb + MAX_DEV_ADDR_SIZE);
334 tcb_desc->bHwSec = 1;
336 if (ieee->need_sw_enc)
337 tcb_desc->bHwSec = 0;
340 hdr = (struct rtllib_hdr_4addr *) skb->data;
341 hdrlen = rtllib_get_hdrlen(le16_to_cpu(hdr->frame_ctl));
343 atomic_inc(&crypt->refcnt);
344 res = crypt->ops->decrypt_msdu(skb, keyidx, hdrlen, crypt->priv, ieee);
345 atomic_dec(&crypt->refcnt);
347 printk(KERN_DEBUG "%s: MSDU decryption/MIC verification failed"
348 " (SA= %pM keyidx=%d)\n",
349 ieee->dev->name, hdr->addr2, keyidx);
357 /* this function is stolen from ipw2200 driver*/
358 #define IEEE_PACKET_RETRY_TIME (5*HZ)
359 static int is_duplicate_packet(struct rtllib_device *ieee,
360 struct rtllib_hdr_4addr *header)
362 u16 fc = le16_to_cpu(header->frame_ctl);
363 u16 sc = le16_to_cpu(header->seq_ctl);
364 u16 seq = WLAN_GET_SEQ_SEQ(sc);
365 u16 frag = WLAN_GET_SEQ_FRAG(sc);
366 u16 *last_seq, *last_frag;
367 unsigned long *last_time;
368 struct rtllib_hdr_3addrqos *hdr_3addrqos;
369 struct rtllib_hdr_4addrqos *hdr_4addrqos;
372 if (((fc & RTLLIB_FCTL_DSTODS) == RTLLIB_FCTL_DSTODS) && RTLLIB_QOS_HAS_SEQ(fc)) {
373 hdr_4addrqos = (struct rtllib_hdr_4addrqos *)header;
374 tid = le16_to_cpu(hdr_4addrqos->qos_ctl) & RTLLIB_QCTL_TID;
377 } else if (RTLLIB_QOS_HAS_SEQ(fc)) {
378 hdr_3addrqos = (struct rtllib_hdr_3addrqos *)header;
379 tid = le16_to_cpu(hdr_3addrqos->qos_ctl) & RTLLIB_QCTL_TID;
386 switch (ieee->iw_mode) {
390 struct ieee_ibss_seq *entry = NULL;
391 u8 *mac = header->addr2;
392 int index = mac[5] % IEEE_IBSS_MAC_HASH_SIZE;
393 list_for_each(p, &ieee->ibss_mac_hash[index]) {
394 entry = list_entry(p, struct ieee_ibss_seq, list);
395 if (!memcmp(entry->mac, mac, ETH_ALEN))
398 if (p == &ieee->ibss_mac_hash[index]) {
399 entry = kmalloc(sizeof(struct ieee_ibss_seq), GFP_ATOMIC);
401 printk(KERN_WARNING "Cannot malloc new mac entry\n");
404 memcpy(entry->mac, mac, ETH_ALEN);
405 entry->seq_num[tid] = seq;
406 entry->frag_num[tid] = frag;
407 entry->packet_time[tid] = jiffies;
408 list_add(&entry->list, &ieee->ibss_mac_hash[index]);
411 last_seq = &entry->seq_num[tid];
412 last_frag = &entry->frag_num[tid];
413 last_time = &entry->packet_time[tid];
418 last_seq = &ieee->last_rxseq_num[tid];
419 last_frag = &ieee->last_rxfrag_num[tid];
420 last_time = &ieee->last_packet_time[tid];
426 if ((*last_seq == seq) &&
427 time_after(*last_time + IEEE_PACKET_RETRY_TIME, jiffies)) {
428 if (*last_frag == frag)
430 if (*last_frag + 1 != frag)
431 /* out-of-order fragment */
437 *last_time = jiffies;
445 static bool AddReorderEntry(struct rx_ts_record *pTS,
446 struct rx_reorder_entry *pReorderEntry)
448 struct list_head *pList = &pTS->RxPendingPktList;
450 while (pList->next != &pTS->RxPendingPktList) {
451 if (SN_LESS(pReorderEntry->SeqNum, ((struct rx_reorder_entry *)
452 list_entry(pList->next, struct rx_reorder_entry,
455 else if (SN_EQUAL(pReorderEntry->SeqNum,
456 ((struct rx_reorder_entry *)list_entry(pList->next,
457 struct rx_reorder_entry, List))->SeqNum))
462 pReorderEntry->List.next = pList->next;
463 pReorderEntry->List.next->prev = &pReorderEntry->List;
464 pReorderEntry->List.prev = pList;
465 pList->next = &pReorderEntry->List;
470 void rtllib_indicate_packets(struct rtllib_device *ieee, struct rtllib_rxb **prxbIndicateArray, u8 index)
472 struct net_device_stats *stats = &ieee->stats;
475 for (j = 0; j < index; j++) {
476 struct rtllib_rxb *prxb = prxbIndicateArray[j];
477 for (i = 0; i < prxb->nr_subframes; i++) {
478 struct sk_buff *sub_skb = prxb->subframes[i];
480 /* convert hdr + possible LLC headers into Ethernet header */
481 ethertype = (sub_skb->data[6] << 8) | sub_skb->data[7];
482 if (sub_skb->len >= 8 &&
483 ((memcmp(sub_skb->data, rfc1042_header, SNAP_SIZE) == 0 &&
484 ethertype != ETH_P_AARP && ethertype != ETH_P_IPX) ||
485 memcmp(sub_skb->data, bridge_tunnel_header, SNAP_SIZE) == 0)) {
486 /* remove RFC1042 or Bridge-Tunnel encapsulation
487 * and replace EtherType */
488 skb_pull(sub_skb, SNAP_SIZE);
489 memcpy(skb_push(sub_skb, ETH_ALEN), prxb->src, ETH_ALEN);
490 memcpy(skb_push(sub_skb, ETH_ALEN), prxb->dst, ETH_ALEN);
493 /* Leave Ethernet header part of hdr and full payload */
494 len = htons(sub_skb->len);
495 memcpy(skb_push(sub_skb, 2), &len, 2);
496 memcpy(skb_push(sub_skb, ETH_ALEN), prxb->src, ETH_ALEN);
497 memcpy(skb_push(sub_skb, ETH_ALEN), prxb->dst, ETH_ALEN);
500 /* Indicat the packets to upper layer */
503 stats->rx_bytes += sub_skb->len;
505 memset(sub_skb->cb, 0, sizeof(sub_skb->cb));
506 sub_skb->protocol = eth_type_trans(sub_skb, ieee->dev);
507 sub_skb->dev = ieee->dev;
508 sub_skb->dev->stats.rx_packets++;
509 sub_skb->dev->stats.rx_bytes += sub_skb->len;
510 sub_skb->ip_summed = CHECKSUM_NONE; /* 802.11 crc not sufficient */
511 ieee->last_rx_ps_time = jiffies;
520 void rtllib_FlushRxTsPendingPkts(struct rtllib_device *ieee, struct rx_ts_record *pTS)
522 struct rx_reorder_entry *pRxReorderEntry;
523 struct rtllib_rxb *RfdArray[REORDER_WIN_SIZE];
526 del_timer_sync(&pTS->RxPktPendingTimer);
527 while (!list_empty(&pTS->RxPendingPktList)) {
528 if (RfdCnt >= REORDER_WIN_SIZE) {
529 printk(KERN_INFO "-------------->%s() error! RfdCnt >= REORDER_WIN_SIZE\n", __func__);
533 pRxReorderEntry = (struct rx_reorder_entry *)list_entry(pTS->RxPendingPktList.prev, struct rx_reorder_entry, List);
534 RTLLIB_DEBUG(RTLLIB_DL_REORDER, "%s(): Indicate SeqNum %d!\n", __func__, pRxReorderEntry->SeqNum);
535 list_del_init(&pRxReorderEntry->List);
537 RfdArray[RfdCnt] = pRxReorderEntry->prxb;
540 list_add_tail(&pRxReorderEntry->List, &ieee->RxReorder_Unused_List);
542 rtllib_indicate_packets(ieee, RfdArray, RfdCnt);
544 pTS->RxIndicateSeq = 0xffff;
547 static void RxReorderIndicatePacket(struct rtllib_device *ieee,
548 struct rtllib_rxb *prxb,
549 struct rx_ts_record *pTS, u16 SeqNum)
551 struct rt_hi_throughput *pHTInfo = ieee->pHTInfo;
552 struct rx_reorder_entry *pReorderEntry = NULL;
553 struct rtllib_rxb *prxbIndicateArray[REORDER_WIN_SIZE];
554 u8 WinSize = pHTInfo->RxReorderWinSize;
557 bool bMatchWinStart = false, bPktInBuf = false;
560 RTLLIB_DEBUG(RTLLIB_DL_REORDER, "%s(): Seq is %d, pTS->RxIndicateSeq"
561 " is %d, WinSize is %d\n", __func__, SeqNum,
562 pTS->RxIndicateSeq, WinSize);
564 spin_lock_irqsave(&(ieee->reorder_spinlock), flags);
566 WinEnd = (pTS->RxIndicateSeq + WinSize - 1) % 4096;
567 /* Rx Reorder initialize condition.*/
568 if (pTS->RxIndicateSeq == 0xffff)
569 pTS->RxIndicateSeq = SeqNum;
571 /* Drop out the packet which SeqNum is smaller than WinStart */
572 if (SN_LESS(SeqNum, pTS->RxIndicateSeq)) {
573 RTLLIB_DEBUG(RTLLIB_DL_REORDER, "Packet Drop! IndicateSeq: %d, NewSeq: %d\n",
574 pTS->RxIndicateSeq, SeqNum);
575 pHTInfo->RxReorderDropCounter++;
578 for (i = 0; i < prxb->nr_subframes; i++)
579 dev_kfree_skb(prxb->subframes[i]);
583 spin_unlock_irqrestore(&(ieee->reorder_spinlock), flags);
588 * Sliding window manipulation. Conditions includes:
589 * 1. Incoming SeqNum is equal to WinStart =>Window shift 1
590 * 2. Incoming SeqNum is larger than the WinEnd => Window shift N
592 if (SN_EQUAL(SeqNum, pTS->RxIndicateSeq)) {
593 pTS->RxIndicateSeq = (pTS->RxIndicateSeq + 1) % 4096;
594 bMatchWinStart = true;
595 } else if (SN_LESS(WinEnd, SeqNum)) {
596 if (SeqNum >= (WinSize - 1))
597 pTS->RxIndicateSeq = SeqNum + 1 - WinSize;
599 pTS->RxIndicateSeq = 4095 - (WinSize - (SeqNum + 1)) + 1;
600 RTLLIB_DEBUG(RTLLIB_DL_REORDER, "Window Shift! IndicateSeq: %d,"
601 " NewSeq: %d\n", pTS->RxIndicateSeq, SeqNum);
605 * Indication process.
606 * After Packet dropping and Sliding Window shifting as above, we can
607 * now just indicate the packets with the SeqNum smaller than latest
608 * WinStart and struct buffer other packets.
610 /* For Rx Reorder condition:
611 * 1. All packets with SeqNum smaller than WinStart => Indicate
612 * 2. All packets with SeqNum larger than or equal to
613 * WinStart => Buffer it.
615 if (bMatchWinStart) {
616 /* Current packet is going to be indicated.*/
617 RTLLIB_DEBUG(RTLLIB_DL_REORDER, "Packets indication!! "
618 "IndicateSeq: %d, NewSeq: %d\n",
619 pTS->RxIndicateSeq, SeqNum);
620 prxbIndicateArray[0] = prxb;
623 /* Current packet is going to be inserted into pending list.*/
624 if (!list_empty(&ieee->RxReorder_Unused_List)) {
625 pReorderEntry = (struct rx_reorder_entry *)
626 list_entry(ieee->RxReorder_Unused_List.next,
627 struct rx_reorder_entry, List);
628 list_del_init(&pReorderEntry->List);
630 /* Make a reorder entry and insert into a the packet list.*/
631 pReorderEntry->SeqNum = SeqNum;
632 pReorderEntry->prxb = prxb;
634 if (!AddReorderEntry(pTS, pReorderEntry)) {
635 RTLLIB_DEBUG(RTLLIB_DL_REORDER,
636 "%s(): Duplicate packet is "
637 "dropped!! IndicateSeq: %d, "
639 __func__, pTS->RxIndicateSeq,
641 list_add_tail(&pReorderEntry->List,
642 &ieee->RxReorder_Unused_List); {
644 for (i = 0; i < prxb->nr_subframes; i++)
645 dev_kfree_skb(prxb->subframes[i]);
650 RTLLIB_DEBUG(RTLLIB_DL_REORDER,
651 "Pkt insert into struct buffer!! "
652 "IndicateSeq: %d, NewSeq: %d\n",
653 pTS->RxIndicateSeq, SeqNum);
657 * Packets are dropped if there are not enough reorder
658 * entries. This part should be modified!! We can just
659 * indicate all the packets in struct buffer and get
662 RTLLIB_DEBUG(RTLLIB_DL_ERR, "RxReorderIndicatePacket():"
663 " There is no reorder entry!! Packet is "
667 for (i = 0; i < prxb->nr_subframes; i++)
668 dev_kfree_skb(prxb->subframes[i]);
675 /* Check if there is any packet need indicate.*/
676 while (!list_empty(&pTS->RxPendingPktList)) {
677 RTLLIB_DEBUG(RTLLIB_DL_REORDER, "%s(): start RREORDER indicate\n", __func__);
679 pReorderEntry = (struct rx_reorder_entry *)list_entry(pTS->RxPendingPktList.prev,
680 struct rx_reorder_entry, List);
681 if (SN_LESS(pReorderEntry->SeqNum, pTS->RxIndicateSeq) ||
682 SN_EQUAL(pReorderEntry->SeqNum, pTS->RxIndicateSeq)) {
683 /* This protect struct buffer from overflow. */
684 if (index >= REORDER_WIN_SIZE) {
685 RTLLIB_DEBUG(RTLLIB_DL_ERR, "RxReorderIndicate"
686 "Packet(): Buffer overflow!!\n");
691 list_del_init(&pReorderEntry->List);
693 if (SN_EQUAL(pReorderEntry->SeqNum, pTS->RxIndicateSeq))
694 pTS->RxIndicateSeq = (pTS->RxIndicateSeq + 1) % 4096;
696 prxbIndicateArray[index] = pReorderEntry->prxb;
697 RTLLIB_DEBUG(RTLLIB_DL_REORDER, "%s(): Indicate SeqNum"
698 " %d!\n", __func__, pReorderEntry->SeqNum);
701 list_add_tail(&pReorderEntry->List,
702 &ieee->RxReorder_Unused_List);
709 /* Handling pending timer. Set this timer to prevent from long time
712 if (timer_pending(&pTS->RxPktPendingTimer))
713 del_timer_sync(&pTS->RxPktPendingTimer);
714 pTS->RxTimeoutIndicateSeq = 0xffff;
716 if (index > REORDER_WIN_SIZE) {
717 RTLLIB_DEBUG(RTLLIB_DL_ERR, "RxReorderIndicatePacket():"
718 " Rx Reorer struct buffer full!!\n");
719 spin_unlock_irqrestore(&(ieee->reorder_spinlock),
723 rtllib_indicate_packets(ieee, prxbIndicateArray, index);
727 if (bPktInBuf && pTS->RxTimeoutIndicateSeq == 0xffff) {
728 RTLLIB_DEBUG(RTLLIB_DL_REORDER, "%s(): SET rx timeout timer\n",
730 pTS->RxTimeoutIndicateSeq = pTS->RxIndicateSeq;
731 mod_timer(&pTS->RxPktPendingTimer, jiffies +
732 MSECS(pHTInfo->RxReorderPendingTime));
734 spin_unlock_irqrestore(&(ieee->reorder_spinlock), flags);
737 static u8 parse_subframe(struct rtllib_device *ieee, struct sk_buff *skb,
738 struct rtllib_rx_stats *rx_stats,
739 struct rtllib_rxb *rxb, u8 *src, u8 *dst)
741 struct rtllib_hdr_3addr *hdr = (struct rtllib_hdr_3addr *)skb->data;
742 u16 fc = le16_to_cpu(hdr->frame_ctl);
744 u16 LLCOffset = sizeof(struct rtllib_hdr_3addr);
746 bool bIsAggregateFrame = false;
747 u16 nSubframe_Length;
748 u8 nPadding_Length = 0;
750 struct sk_buff *sub_skb;
752 /* just for debug purpose */
753 SeqNum = WLAN_GET_SEQ_SEQ(le16_to_cpu(hdr->seq_ctl));
754 if ((RTLLIB_QOS_HAS_SEQ(fc)) &&
755 (((union frameqos *)(skb->data + RTLLIB_3ADDR_LEN))->field.reserved))
756 bIsAggregateFrame = true;
758 if (RTLLIB_QOS_HAS_SEQ(fc))
760 if (rx_stats->bContainHTC)
761 LLCOffset += sHTCLng;
763 ChkLength = LLCOffset;
765 if (skb->len <= ChkLength)
768 skb_pull(skb, LLCOffset);
769 ieee->bIsAggregateFrame = bIsAggregateFrame;
770 if (!bIsAggregateFrame) {
771 rxb->nr_subframes = 1;
773 /* altered by clark 3/30/2010
774 * The struct buffer size of the skb indicated to upper layer
775 * must be less than 5000, or the defraged IP datagram
776 * in the IP layer will exceed "ipfrag_high_tresh" and be
777 * discarded. so there must not use the function
778 * "skb_copy" and "skb_clone" for "skb".
781 /* Allocate new skb for releasing to upper layer */
782 sub_skb = dev_alloc_skb(RTLLIB_SKBBUFFER_SIZE);
783 skb_reserve(sub_skb, 12);
784 data_ptr = (u8 *)skb_put(sub_skb, skb->len);
785 memcpy(data_ptr, skb->data, skb->len);
786 sub_skb->dev = ieee->dev;
788 rxb->subframes[0] = sub_skb;
790 memcpy(rxb->src, src, ETH_ALEN);
791 memcpy(rxb->dst, dst, ETH_ALEN);
792 rxb->subframes[0]->dev = ieee->dev;
795 rxb->nr_subframes = 0;
796 memcpy(rxb->src, src, ETH_ALEN);
797 memcpy(rxb->dst, dst, ETH_ALEN);
798 while (skb->len > ETHERNET_HEADER_SIZE) {
799 /* Offset 12 denote 2 mac address */
800 nSubframe_Length = *((u16 *)(skb->data + 12));
801 nSubframe_Length = (nSubframe_Length >> 8) +
802 (nSubframe_Length << 8);
804 if (skb->len < (ETHERNET_HEADER_SIZE + nSubframe_Length)) {
805 printk(KERN_INFO "%s: A-MSDU parse error!! "
806 "pRfd->nTotalSubframe : %d\n",\
807 __func__, rxb->nr_subframes);
808 printk(KERN_INFO "%s: A-MSDU parse error!! "
809 "Subframe Length: %d\n", __func__,
811 printk(KERN_INFO "nRemain_Length is %d and "
812 "nSubframe_Length is : %d\n", skb->len,
814 printk(KERN_INFO "The Packet SeqNum is %d\n", SeqNum);
818 /* move the data point to data content */
819 skb_pull(skb, ETHERNET_HEADER_SIZE);
821 /* altered by clark 3/30/2010
822 * The struct buffer size of the skb indicated to upper layer
823 * must be less than 5000, or the defraged IP datagram
824 * in the IP layer will exceed "ipfrag_high_tresh" and be
825 * discarded. so there must not use the function
826 * "skb_copy" and "skb_clone" for "skb".
829 /* Allocate new skb for releasing to upper layer */
830 sub_skb = dev_alloc_skb(nSubframe_Length + 12);
831 skb_reserve(sub_skb, 12);
832 data_ptr = (u8 *)skb_put(sub_skb, nSubframe_Length);
833 memcpy(data_ptr, skb->data, nSubframe_Length);
835 sub_skb->dev = ieee->dev;
836 rxb->subframes[rxb->nr_subframes++] = sub_skb;
837 if (rxb->nr_subframes >= MAX_SUBFRAME_COUNT) {
838 RTLLIB_DEBUG_RX("ParseSubframe(): Too many "
839 "Subframes! Packets dropped!\n");
842 skb_pull(skb, nSubframe_Length);
845 nPadding_Length = 4 - ((nSubframe_Length +
846 ETHERNET_HEADER_SIZE) % 4);
847 if (nPadding_Length == 4)
850 if (skb->len < nPadding_Length)
853 skb_pull(skb, nPadding_Length);
857 return rxb->nr_subframes;
862 static size_t rtllib_rx_get_hdrlen(struct rtllib_device *ieee,
864 struct rtllib_rx_stats *rx_stats)
866 struct rtllib_hdr_4addr *hdr = (struct rtllib_hdr_4addr *)skb->data;
867 u16 fc = le16_to_cpu(hdr->frame_ctl);
870 hdrlen = rtllib_get_hdrlen(fc);
871 if (HTCCheck(ieee, skb->data)) {
873 printk(KERN_INFO "%s: find HTCControl!\n", __func__);
875 rx_stats->bContainHTC = 1;
878 if (RTLLIB_QOS_HAS_SEQ(fc))
879 rx_stats->bIsQosData = 1;
884 static int rtllib_rx_check_duplicate(struct rtllib_device *ieee,
885 struct sk_buff *skb, u8 multicast)
887 struct rtllib_hdr_4addr *hdr = (struct rtllib_hdr_4addr *)skb->data;
889 u8 frag, type, stype;
891 fc = le16_to_cpu(hdr->frame_ctl);
892 type = WLAN_FC_GET_TYPE(fc);
893 stype = WLAN_FC_GET_STYPE(fc);
894 sc = le16_to_cpu(hdr->seq_ctl);
895 frag = WLAN_GET_SEQ_FRAG(sc);
897 if ((ieee->pHTInfo->bCurRxReorderEnable == false) ||
898 !ieee->current_network.qos_data.active ||
899 !IsDataFrame(skb->data) ||
900 IsLegacyDataFrame(skb->data)) {
901 if (!((type == RTLLIB_FTYPE_MGMT) && (stype == RTLLIB_STYPE_BEACON))) {
902 if (is_duplicate_packet(ieee, hdr))
906 struct rx_ts_record *pRxTS = NULL;
907 if (GetTs(ieee, (struct ts_common_info **) &pRxTS, hdr->addr2,
908 (u8)Frame_QoSTID((u8 *)(skb->data)), RX_DIR, true)) {
909 if ((fc & (1<<11)) && (frag == pRxTS->RxLastFragNum) &&
910 (WLAN_GET_SEQ_SEQ(sc) == pRxTS->RxLastSeqNum)) {
913 pRxTS->RxLastFragNum = frag;
914 pRxTS->RxLastSeqNum = WLAN_GET_SEQ_SEQ(sc);
917 RTLLIB_DEBUG(RTLLIB_DL_ERR, "ERR!!%s(): No TS!! Skip"
918 " the check!!\n", __func__);
926 static void rtllib_rx_extract_addr(struct rtllib_device *ieee,
927 struct rtllib_hdr_4addr *hdr, u8 *dst,
930 u16 fc = le16_to_cpu(hdr->frame_ctl);
932 switch (fc & (RTLLIB_FCTL_FROMDS | RTLLIB_FCTL_TODS)) {
933 case RTLLIB_FCTL_FROMDS:
934 memcpy(dst, hdr->addr1, ETH_ALEN);
935 memcpy(src, hdr->addr3, ETH_ALEN);
936 memcpy(bssid, hdr->addr2, ETH_ALEN);
938 case RTLLIB_FCTL_TODS:
939 memcpy(dst, hdr->addr3, ETH_ALEN);
940 memcpy(src, hdr->addr2, ETH_ALEN);
941 memcpy(bssid, hdr->addr1, ETH_ALEN);
943 case RTLLIB_FCTL_FROMDS | RTLLIB_FCTL_TODS:
944 memcpy(dst, hdr->addr3, ETH_ALEN);
945 memcpy(src, hdr->addr4, ETH_ALEN);
946 memcpy(bssid, ieee->current_network.bssid, ETH_ALEN);
949 memcpy(dst, hdr->addr1, ETH_ALEN);
950 memcpy(src, hdr->addr2, ETH_ALEN);
951 memcpy(bssid, hdr->addr3, ETH_ALEN);
956 static int rtllib_rx_data_filter(struct rtllib_device *ieee, u16 fc,
957 u8 *dst, u8 *src, u8 *bssid, u8 *addr2)
959 u8 zero_addr[ETH_ALEN] = {0};
962 type = WLAN_FC_GET_TYPE(fc);
963 stype = WLAN_FC_GET_STYPE(fc);
965 /* Filter frames from different BSS */
966 if (((fc & RTLLIB_FCTL_DSTODS) != RTLLIB_FCTL_DSTODS)
967 && (compare_ether_addr(ieee->current_network.bssid, bssid) != 0)
968 && memcmp(ieee->current_network.bssid, zero_addr, ETH_ALEN)) {
972 /* Filter packets sent by an STA that will be forwarded by AP */
973 if (ieee->IntelPromiscuousModeInfo.bPromiscuousOn &&
974 ieee->IntelPromiscuousModeInfo.bFilterSourceStationFrame) {
975 if ((fc & RTLLIB_FCTL_TODS) && !(fc & RTLLIB_FCTL_FROMDS) &&
976 (compare_ether_addr(dst, ieee->current_network.bssid) != 0) &&
977 (compare_ether_addr(bssid, ieee->current_network.bssid) == 0)) {
982 /* Nullfunc frames may have PS-bit set, so they must be passed to
983 * hostap_handle_sta_rx() before being dropped here. */
984 if (!ieee->IntelPromiscuousModeInfo.bPromiscuousOn) {
985 if (stype != RTLLIB_STYPE_DATA &&
986 stype != RTLLIB_STYPE_DATA_CFACK &&
987 stype != RTLLIB_STYPE_DATA_CFPOLL &&
988 stype != RTLLIB_STYPE_DATA_CFACKPOLL &&
989 stype != RTLLIB_STYPE_QOS_DATA) {
990 if (stype != RTLLIB_STYPE_NULLFUNC)
992 "RX: dropped data frame "
993 "with no data (type=0x%02x, "
1000 if (ieee->iw_mode != IW_MODE_MESH) {
1001 /* packets from our adapter are dropped (echo) */
1002 if (!memcmp(src, ieee->dev->dev_addr, ETH_ALEN))
1005 /* {broad,multi}cast packets to our BSS go through */
1006 if (is_multicast_ether_addr(dst) || is_broadcast_ether_addr(dst)) {
1007 if (memcmp(bssid, ieee->current_network.bssid, ETH_ALEN))
1014 static int rtllib_rx_get_crypt(struct rtllib_device *ieee, struct sk_buff *skb,
1015 struct rtllib_crypt_data **crypt, size_t hdrlen)
1017 struct rtllib_hdr_4addr *hdr = (struct rtllib_hdr_4addr *)skb->data;
1018 u16 fc = le16_to_cpu(hdr->frame_ctl);
1021 if (ieee->host_decrypt) {
1022 if (skb->len >= hdrlen + 3)
1023 idx = skb->data[hdrlen + 3] >> 6;
1025 *crypt = ieee->crypt[idx];
1026 /* allow NULL decrypt to indicate an station specific override
1027 * for default encryption */
1028 if (*crypt && ((*crypt)->ops == NULL ||
1029 (*crypt)->ops->decrypt_mpdu == NULL))
1032 if (!*crypt && (fc & RTLLIB_FCTL_WEP)) {
1033 /* This seems to be triggered by some (multicast?)
1034 * frames from other than current BSS, so just drop the
1035 * frames silently instead of filling system log with
1037 RTLLIB_DEBUG_DROP("Decryption failed (not set)"
1040 ieee->ieee_stats.rx_discards_undecryptable++;
1048 static int rtllib_rx_decrypt(struct rtllib_device *ieee, struct sk_buff *skb,
1049 struct rtllib_rx_stats *rx_stats,
1050 struct rtllib_crypt_data *crypt, size_t hdrlen)
1052 struct rtllib_hdr_4addr *hdr;
1057 hdr = (struct rtllib_hdr_4addr *)skb->data;
1058 fc = le16_to_cpu(hdr->frame_ctl);
1059 sc = le16_to_cpu(hdr->seq_ctl);
1060 frag = WLAN_GET_SEQ_FRAG(sc);
1062 if ((!rx_stats->Decrypted))
1063 ieee->need_sw_enc = 1;
1065 ieee->need_sw_enc = 0;
1067 keyidx = rtllib_rx_frame_decrypt(ieee, skb, crypt);
1068 if (ieee->host_decrypt && (fc & RTLLIB_FCTL_WEP) && (keyidx < 0)) {
1069 printk(KERN_INFO "%s: decrypt frame error\n", __func__);
1073 hdr = (struct rtllib_hdr_4addr *) skb->data;
1074 if ((frag != 0 || (fc & RTLLIB_FCTL_MOREFRAGS))) {
1076 struct sk_buff *frag_skb = rtllib_frag_cache_get(ieee, hdr);
1077 RTLLIB_DEBUG_FRAG("Rx Fragment received (%u)\n", frag);
1080 RTLLIB_DEBUG(RTLLIB_DL_RX | RTLLIB_DL_FRAG,
1081 "Rx cannot get skb from fragment "
1082 "cache (morefrag=%d seq=%u frag=%u)\n",
1083 (fc & RTLLIB_FCTL_MOREFRAGS) != 0,
1084 WLAN_GET_SEQ_SEQ(sc), frag);
1091 if (frag_skb->tail + flen > frag_skb->end) {
1092 printk(KERN_WARNING "%s: host decrypted and "
1093 "reassembled frame did not fit skb\n",
1095 rtllib_frag_cache_invalidate(ieee, hdr);
1100 /* copy first fragment (including full headers) into
1101 * beginning of the fragment cache skb */
1102 memcpy(skb_put(frag_skb, flen), skb->data, flen);
1104 /* append frame payload to the end of the fragment
1106 memcpy(skb_put(frag_skb, flen), skb->data + hdrlen,
1109 dev_kfree_skb_any(skb);
1112 if (fc & RTLLIB_FCTL_MOREFRAGS) {
1113 /* more fragments expected - leave the skb in fragment
1114 * cache for now; it will be delivered to upper layers
1115 * after all fragments have been received */
1119 /* this was the last fragment and the frame will be
1120 * delivered, so remove skb from fragment cache */
1122 hdr = (struct rtllib_hdr_4addr *) skb->data;
1123 rtllib_frag_cache_invalidate(ieee, hdr);
1126 /* skb: hdr + (possible reassembled) full MSDU payload; possibly still
1127 * encrypted/authenticated */
1128 if (ieee->host_decrypt && (fc & RTLLIB_FCTL_WEP) &&
1129 rtllib_rx_frame_decrypt_msdu(ieee, skb, keyidx, crypt)) {
1130 printk(KERN_INFO "%s: ==>decrypt msdu error\n", __func__);
1134 hdr = (struct rtllib_hdr_4addr *) skb->data;
1135 if (crypt && !(fc & RTLLIB_FCTL_WEP) && !ieee->open_wep) {
1136 if (/*ieee->ieee802_1x &&*/
1137 rtllib_is_eapol_frame(ieee, skb, hdrlen)) {
1139 /* pass unencrypted EAPOL frames even if encryption is
1141 struct eapol *eap = (struct eapol *)(skb->data +
1143 RTLLIB_DEBUG_EAP("RX: IEEE 802.1X EAPOL frame: %s\n",
1144 eap_get_type(eap->type));
1147 "encryption configured, but RX "
1148 "frame not encrypted (SA= %pM)\n",
1154 if (crypt && !(fc & RTLLIB_FCTL_WEP) &&
1155 rtllib_is_eapol_frame(ieee, skb, hdrlen)) {
1156 struct eapol *eap = (struct eapol *)(skb->data +
1158 RTLLIB_DEBUG_EAP("RX: IEEE 802.1X EAPOL frame: %s\n",
1159 eap_get_type(eap->type));
1162 if (crypt && !(fc & RTLLIB_FCTL_WEP) && !ieee->open_wep &&
1163 !rtllib_is_eapol_frame(ieee, skb, hdrlen)) {
1165 "dropped unencrypted RX data "
1167 " (drop_unencrypted=1)\n",
1172 if (rtllib_is_eapol_frame(ieee, skb, hdrlen))
1173 printk(KERN_WARNING "RX: IEEE802.1X EAPOL frame!\n");
1178 static void rtllib_rx_check_leave_lps(struct rtllib_device *ieee, u8 unicast, u8 nr_subframes)
1182 if ((ieee->state == RTLLIB_LINKED)) {
1183 if (((ieee->LinkDetectInfo.NumRxUnicastOkInPeriod +
1184 ieee->LinkDetectInfo.NumTxOkInPeriod) > 8) ||
1185 (ieee->LinkDetectInfo.NumRxUnicastOkInPeriod > 2)) {
1186 if (ieee->LeisurePSLeave)
1187 ieee->LeisurePSLeave(ieee->dev);
1191 ieee->last_rx_ps_time = jiffies;
1194 static void rtllib_rx_indicate_pkt_legacy(struct rtllib_device *ieee,
1195 struct rtllib_rx_stats *rx_stats,
1196 struct rtllib_rxb *rxb,
1200 struct net_device *dev = ieee->dev;
1205 printk(KERN_INFO "%s: rxb is NULL!!\n", __func__);
1209 for (i = 0; i < rxb->nr_subframes; i++) {
1210 struct sk_buff *sub_skb = rxb->subframes[i];
1213 /* convert hdr + possible LLC headers into Ethernet header */
1214 ethertype = (sub_skb->data[6] << 8) | sub_skb->data[7];
1215 if (sub_skb->len >= 8 &&
1216 ((memcmp(sub_skb->data, rfc1042_header, SNAP_SIZE) == 0 &&
1217 ethertype != ETH_P_AARP && ethertype != ETH_P_IPX) ||
1218 memcmp(sub_skb->data, bridge_tunnel_header, SNAP_SIZE) == 0)) {
1219 /* remove RFC1042 or Bridge-Tunnel encapsulation and
1220 * replace EtherType */
1221 skb_pull(sub_skb, SNAP_SIZE);
1222 memcpy(skb_push(sub_skb, ETH_ALEN), src, ETH_ALEN);
1223 memcpy(skb_push(sub_skb, ETH_ALEN), dst, ETH_ALEN);
1226 /* Leave Ethernet header part of hdr and full payload */
1227 len = htons(sub_skb->len);
1228 memcpy(skb_push(sub_skb, 2), &len, 2);
1229 memcpy(skb_push(sub_skb, ETH_ALEN), src, ETH_ALEN);
1230 memcpy(skb_push(sub_skb, ETH_ALEN), dst, ETH_ALEN);
1233 ieee->stats.rx_packets++;
1234 ieee->stats.rx_bytes += sub_skb->len;
1236 if (is_multicast_ether_addr(dst))
1237 ieee->stats.multicast++;
1239 /* Indicat the packets to upper layer */
1240 memset(sub_skb->cb, 0, sizeof(sub_skb->cb));
1241 sub_skb->protocol = eth_type_trans(sub_skb, dev);
1243 sub_skb->dev->stats.rx_packets++;
1244 sub_skb->dev->stats.rx_bytes += sub_skb->len;
1245 sub_skb->ip_summed = CHECKSUM_NONE; /* 802.11 crc not sufficient */
1253 static int rtllib_rx_InfraAdhoc(struct rtllib_device *ieee, struct sk_buff *skb,
1254 struct rtllib_rx_stats *rx_stats)
1256 struct net_device *dev = ieee->dev;
1257 struct rtllib_hdr_4addr *hdr = (struct rtllib_hdr_4addr *)skb->data;
1258 struct rtllib_crypt_data *crypt = NULL;
1259 struct rtllib_rxb *rxb = NULL;
1260 struct rx_ts_record *pTS = NULL;
1261 u16 fc, sc, SeqNum = 0;
1262 u8 type, stype, multicast = 0, unicast = 0, nr_subframes = 0, TID = 0;
1263 u8 dst[ETH_ALEN], src[ETH_ALEN], bssid[ETH_ALEN] = {0}, *payload;
1265 bool bToOtherSTA = false;
1268 hdr = (struct rtllib_hdr_4addr *)skb->data;
1269 fc = le16_to_cpu(hdr->frame_ctl);
1270 type = WLAN_FC_GET_TYPE(fc);
1271 stype = WLAN_FC_GET_STYPE(fc);
1272 sc = le16_to_cpu(hdr->seq_ctl);
1274 /*Filter pkt not to me*/
1275 multicast = is_multicast_ether_addr(hdr->addr1)|is_broadcast_ether_addr(hdr->addr1);
1276 unicast = !multicast;
1277 if (unicast && (compare_ether_addr(dev->dev_addr, hdr->addr1) != 0)) {
1278 if (ieee->bNetPromiscuousMode)
1284 /*Filter pkt has too small length */
1285 hdrlen = rtllib_rx_get_hdrlen(ieee, skb, rx_stats);
1286 if (skb->len < hdrlen) {
1287 printk(KERN_INFO "%s():ERR!!! skb->len is smaller than hdrlen\n", __func__);
1291 /* Filter Duplicate pkt */
1292 ret = rtllib_rx_check_duplicate(ieee, skb, multicast);
1296 /* Filter CTRL Frame */
1297 if (type == RTLLIB_FTYPE_CTL)
1300 /* Filter MGNT Frame */
1301 if (type == RTLLIB_FTYPE_MGMT) {
1304 if (rtllib_rx_frame_mgmt(ieee, skb, rx_stats, type, stype))
1310 /* Filter WAPI DATA Frame */
1312 /* Update statstics for AP roaming */
1314 ieee->LinkDetectInfo.NumRecvDataInPeriod++;
1315 ieee->LinkDetectInfo.NumRxOkInPeriod++;
1317 dev->last_rx = jiffies;
1319 /* Data frame - extract src/dst addresses */
1320 rtllib_rx_extract_addr(ieee, hdr, dst, src, bssid);
1322 /* Filter Data frames */
1323 ret = rtllib_rx_data_filter(ieee, fc, dst, src, bssid, hdr->addr2);
1327 if (skb->len == hdrlen)
1330 /* Send pspoll based on moredata */
1331 if ((ieee->iw_mode == IW_MODE_INFRA) && (ieee->sta_sleep == LPS_IS_SLEEP)
1332 && (ieee->polling) && (!bToOtherSTA)) {
1333 if (WLAN_FC_MORE_DATA(fc)) {
1334 /* more data bit is set, let's request a new frame from the AP */
1335 rtllib_sta_ps_send_pspoll_frame(ieee);
1337 ieee->polling = false;
1341 /* Get crypt if encrypted */
1342 ret = rtllib_rx_get_crypt(ieee, skb, &crypt, hdrlen);
1346 /* Decrypt data frame (including reassemble) */
1347 ret = rtllib_rx_decrypt(ieee, skb, rx_stats, crypt, hdrlen);
1353 /* Get TS for Rx Reorder */
1354 hdr = (struct rtllib_hdr_4addr *) skb->data;
1355 if (ieee->current_network.qos_data.active && IsQoSDataFrame(skb->data)
1356 && !is_multicast_ether_addr(hdr->addr1) && !is_broadcast_ether_addr(hdr->addr1)
1357 && (!bToOtherSTA)) {
1358 TID = Frame_QoSTID(skb->data);
1359 SeqNum = WLAN_GET_SEQ_SEQ(sc);
1360 GetTs(ieee, (struct ts_common_info **) &pTS, hdr->addr2, TID, RX_DIR, true);
1361 if (TID != 0 && TID != 3)
1362 ieee->bis_any_nonbepkts = true;
1365 /* Parse rx data frame (For AMSDU) */
1366 /* skb: hdr + (possible reassembled) full plaintext payload */
1367 payload = skb->data + hdrlen;
1368 rxb = kmalloc(sizeof(struct rtllib_rxb), GFP_ATOMIC);
1370 RTLLIB_DEBUG(RTLLIB_DL_ERR,
1371 "%s(): kmalloc rxb error\n", __func__);
1374 /* to parse amsdu packets */
1375 /* qos data packets & reserved bit is 1 */
1376 if (parse_subframe(ieee, skb, rx_stats, rxb, src, dst) == 0) {
1377 /* only to free rxb, and not submit the packets to upper layer */
1378 for (i = 0; i < rxb->nr_subframes; i++)
1379 dev_kfree_skb(rxb->subframes[i]);
1385 /* Update WAPI PN */
1387 /* Check if leave LPS */
1389 if (ieee->bIsAggregateFrame)
1390 nr_subframes = rxb->nr_subframes;
1394 ieee->LinkDetectInfo.NumRxUnicastOkInPeriod += nr_subframes;
1395 rtllib_rx_check_leave_lps(ieee, unicast, nr_subframes);
1398 /* Indicate packets to upper layer or Rx Reorder */
1399 if (ieee->pHTInfo->bCurRxReorderEnable == false || pTS == NULL || bToOtherSTA)
1400 rtllib_rx_indicate_pkt_legacy(ieee, rx_stats, rxb, dst, src);
1402 RxReorderIndicatePacket(ieee, rxb, pTS, SeqNum);
1414 ieee->stats.rx_dropped++;
1416 /* Returning 0 indicates to caller that we have not handled the SKB--
1417 * so it is still allocated and can be used again by underlying
1418 * hardware as a DMA target */
1422 static int rtllib_rx_Master(struct rtllib_device *ieee, struct sk_buff *skb,
1423 struct rtllib_rx_stats *rx_stats)
1428 static int rtllib_rx_Monitor(struct rtllib_device *ieee, struct sk_buff *skb,
1429 struct rtllib_rx_stats *rx_stats)
1431 struct rtllib_hdr_4addr *hdr = (struct rtllib_hdr_4addr *)skb->data;
1432 u16 fc = le16_to_cpu(hdr->frame_ctl);
1433 size_t hdrlen = rtllib_get_hdrlen(fc);
1435 if (skb->len < hdrlen) {
1436 printk(KERN_INFO "%s():ERR!!! skb->len is smaller than hdrlen\n", __func__);
1440 if (HTCCheck(ieee, skb->data)) {
1441 if (net_ratelimit())
1442 printk(KERN_INFO "%s: Find HTCControl!\n", __func__);
1446 rtllib_monitor_rx(ieee, skb, rx_stats, hdrlen);
1447 ieee->stats.rx_packets++;
1448 ieee->stats.rx_bytes += skb->len;
1453 static int rtllib_rx_Mesh(struct rtllib_device *ieee, struct sk_buff *skb,
1454 struct rtllib_rx_stats *rx_stats)
1459 /* All received frames are sent to this function. @skb contains the frame in
1460 * IEEE 802.11 format, i.e., in the format it was sent over air.
1461 * This function is called only as a tasklet (software IRQ). */
1462 int rtllib_rx(struct rtllib_device *ieee, struct sk_buff *skb,
1463 struct rtllib_rx_stats *rx_stats)
1467 if ((NULL == ieee) || (NULL == skb) || (NULL == rx_stats)) {
1468 printk(KERN_INFO "%s: Input parameters NULL!\n", __func__);
1471 if (skb->len < 10) {
1472 printk(KERN_INFO "%s: SKB length < 10\n", __func__);
1476 switch (ieee->iw_mode) {
1479 ret = rtllib_rx_InfraAdhoc(ieee, skb, rx_stats);
1481 case IW_MODE_MASTER:
1482 case IW_MODE_REPEAT:
1483 ret = rtllib_rx_Master(ieee, skb, rx_stats);
1485 case IW_MODE_MONITOR:
1486 ret = rtllib_rx_Monitor(ieee, skb, rx_stats);
1489 ret = rtllib_rx_Mesh(ieee, skb, rx_stats);
1492 printk(KERN_INFO"%s: ERR iw mode!!!\n", __func__);
1499 ieee->stats.rx_dropped++;
1503 static u8 qos_oui[QOS_OUI_LEN] = { 0x00, 0x50, 0xF2 };
1506 * Make ther structure we read from the beacon packet has
1509 static int rtllib_verify_qos_info(struct rtllib_qos_information_element
1510 *info_element, int sub_type)
1513 if (info_element->qui_subtype != sub_type)
1515 if (memcmp(info_element->qui, qos_oui, QOS_OUI_LEN))
1517 if (info_element->qui_type != QOS_OUI_TYPE)
1519 if (info_element->version != QOS_VERSION_1)
1527 * Parse a QoS parameter element
1529 static int rtllib_read_qos_param_element(struct rtllib_qos_parameter_info
1530 *element_param, struct rtllib_info_element
1534 u16 size = sizeof(struct rtllib_qos_parameter_info) - 2;
1536 if ((info_element == NULL) || (element_param == NULL))
1539 if (info_element->id == QOS_ELEMENT_ID && info_element->len == size) {
1540 memcpy(element_param->info_element.qui, info_element->data,
1542 element_param->info_element.elementID = info_element->id;
1543 element_param->info_element.length = info_element->len;
1547 ret = rtllib_verify_qos_info(&element_param->info_element,
1548 QOS_OUI_PARAM_SUB_TYPE);
1553 * Parse a QoS information element
1555 static int rtllib_read_qos_info_element(struct
1556 rtllib_qos_information_element
1557 *element_info, struct rtllib_info_element
1561 u16 size = sizeof(struct rtllib_qos_information_element) - 2;
1563 if (element_info == NULL)
1565 if (info_element == NULL)
1568 if ((info_element->id == QOS_ELEMENT_ID) && (info_element->len == size)) {
1569 memcpy(element_info->qui, info_element->data,
1571 element_info->elementID = info_element->id;
1572 element_info->length = info_element->len;
1577 ret = rtllib_verify_qos_info(element_info,
1578 QOS_OUI_INFO_SUB_TYPE);
1584 * Write QoS parameters from the ac parameters.
1586 static int rtllib_qos_convert_ac_to_parameters(struct rtllib_qos_parameter_info *param_elm,
1587 struct rtllib_qos_data *qos_data)
1589 struct rtllib_qos_ac_parameter *ac_params;
1590 struct rtllib_qos_parameters *qos_param = &(qos_data->parameters);
1596 qos_data->wmm_acm = 0;
1597 for (i = 0; i < QOS_QUEUE_NUM; i++) {
1598 ac_params = &(param_elm->ac_params_record[i]);
1600 aci = (ac_params->aci_aifsn & 0x60) >> 5;
1601 acm = (ac_params->aci_aifsn & 0x10) >> 4;
1603 if (aci >= QOS_QUEUE_NUM)
1607 /* BIT(0) | BIT(3) */
1609 qos_data->wmm_acm |= (0x01<<0)|(0x01<<3);
1612 /* BIT(4) | BIT(5) */
1614 qos_data->wmm_acm |= (0x01<<4)|(0x01<<5);
1617 /* BIT(6) | BIT(7) */
1619 qos_data->wmm_acm |= (0x01<<6)|(0x01<<7);
1623 /* BIT(1) | BIT(2) */
1625 qos_data->wmm_acm |= (0x01<<1)|(0x01<<2);
1629 qos_param->aifs[aci] = (ac_params->aci_aifsn) & 0x0f;
1631 /* WMM spec P.11: The minimum value for AIFSN shall be 2 */
1632 qos_param->aifs[aci] = (qos_param->aifs[aci] < 2) ? 2 : qos_param->aifs[aci];
1634 qos_param->cw_min[aci] = ac_params->ecw_min_max & 0x0F;
1636 qos_param->cw_max[aci] = (ac_params->ecw_min_max & 0xF0) >> 4;
1638 qos_param->flag[aci] =
1639 (ac_params->aci_aifsn & 0x10) ? 0x01 : 0x00;
1640 qos_param->tx_op_limit[aci] = le16_to_cpu(ac_params->tx_op_limit);
1646 * we have a generic data element which it may contain QoS information or
1647 * parameters element. check the information element length to decide
1648 * which type to read
1650 static int rtllib_parse_qos_info_param_IE(struct rtllib_info_element
1652 struct rtllib_network *network)
1655 struct rtllib_qos_information_element qos_info_element;
1657 rc = rtllib_read_qos_info_element(&qos_info_element, info_element);
1660 network->qos_data.param_count = qos_info_element.ac_info & 0x0F;
1661 network->flags |= NETWORK_HAS_QOS_INFORMATION;
1663 struct rtllib_qos_parameter_info param_element;
1665 rc = rtllib_read_qos_param_element(¶m_element,
1668 rtllib_qos_convert_ac_to_parameters(¶m_element,
1669 &(network->qos_data));
1670 network->flags |= NETWORK_HAS_QOS_PARAMETERS;
1671 network->qos_data.param_count =
1672 param_element.info_element.ac_info & 0x0F;
1677 RTLLIB_DEBUG_QOS("QoS is supported\n");
1678 network->qos_data.supported = 1;
1683 #define MFIE_STRING(x) case MFIE_TYPE_ ##x: return #x
1685 static const char *get_info_element_string(u16 id)
1690 MFIE_STRING(FH_SET);
1691 MFIE_STRING(DS_SET);
1692 MFIE_STRING(CF_SET);
1694 MFIE_STRING(IBSS_SET);
1695 MFIE_STRING(COUNTRY);
1696 MFIE_STRING(HOP_PARAMS);
1697 MFIE_STRING(HOP_TABLE);
1698 MFIE_STRING(REQUEST);
1699 MFIE_STRING(CHALLENGE);
1700 MFIE_STRING(POWER_CONSTRAINT);
1701 MFIE_STRING(POWER_CAPABILITY);
1702 MFIE_STRING(TPC_REQUEST);
1703 MFIE_STRING(TPC_REPORT);
1704 MFIE_STRING(SUPP_CHANNELS);
1706 MFIE_STRING(MEASURE_REQUEST);
1707 MFIE_STRING(MEASURE_REPORT);
1709 MFIE_STRING(IBSS_DFS);
1711 MFIE_STRING(RATES_EX);
1712 MFIE_STRING(GENERIC);
1713 MFIE_STRING(QOS_PARAMETER);
1719 static inline void rtllib_extract_country_ie(
1720 struct rtllib_device *ieee,
1721 struct rtllib_info_element *info_element,
1722 struct rtllib_network *network,
1725 if (IS_DOT11D_ENABLE(ieee)) {
1726 if (info_element->len != 0) {
1727 memcpy(network->CountryIeBuf, info_element->data, info_element->len);
1728 network->CountryIeLen = info_element->len;
1730 if (!IS_COUNTRY_IE_VALID(ieee)) {
1731 if ((rtllib_act_scanning(ieee, false) == true) && (ieee->FirstIe_InScan == 1))
1732 printk(KERN_INFO "Received beacon ContryIE, SSID: <%s>\n", network->ssid);
1733 Dot11d_UpdateCountryIe(ieee, addr2, info_element->len, info_element->data);
1737 if (IS_EQUAL_CIE_SRC(ieee, addr2))
1738 UPDATE_CIE_WATCHDOG(ieee);
1743 int rtllib_parse_info_param(struct rtllib_device *ieee,
1744 struct rtllib_info_element *info_element,
1746 struct rtllib_network *network,
1747 struct rtllib_rx_stats *stats)
1751 u16 tmp_htcap_len = 0;
1752 u16 tmp_htinfo_len = 0;
1753 u16 ht_realtek_agg_len = 0;
1754 u8 ht_realtek_agg_buf[MAX_IE_LEN];
1758 while (length >= sizeof(*info_element)) {
1759 if (sizeof(*info_element) + info_element->len > length) {
1760 RTLLIB_DEBUG_MGMT("Info elem: parse failed: "
1761 "info_element->len + 2 > left : "
1762 "info_element->len+2=%zd left=%d, id=%d.\n",
1764 sizeof(*info_element),
1765 length, info_element->id);
1766 /* We stop processing but don't return an error here
1767 * because some misbehaviour APs break this rule. ie.
1768 * Orinoco AP1000. */
1772 switch (info_element->id) {
1773 case MFIE_TYPE_SSID:
1774 if (rtllib_is_empty_essid(info_element->data,
1775 info_element->len)) {
1776 network->flags |= NETWORK_EMPTY_ESSID;
1780 network->ssid_len = min(info_element->len,
1781 (u8) IW_ESSID_MAX_SIZE);
1782 memcpy(network->ssid, info_element->data, network->ssid_len);
1783 if (network->ssid_len < IW_ESSID_MAX_SIZE)
1784 memset(network->ssid + network->ssid_len, 0,
1785 IW_ESSID_MAX_SIZE - network->ssid_len);
1787 RTLLIB_DEBUG_MGMT("MFIE_TYPE_SSID: '%s' len=%d.\n",
1788 network->ssid, network->ssid_len);
1791 case MFIE_TYPE_RATES:
1793 network->rates_len = min(info_element->len,
1795 for (i = 0; i < network->rates_len; i++) {
1796 network->rates[i] = info_element->data[i];
1797 p += snprintf(p, sizeof(rates_str) -
1798 (p - rates_str), "%02X ",
1800 if (rtllib_is_ofdm_rate
1801 (info_element->data[i])) {
1802 network->flags |= NETWORK_HAS_OFDM;
1803 if (info_element->data[i] &
1804 RTLLIB_BASIC_RATE_MASK)
1809 if (rtllib_is_cck_rate
1810 (info_element->data[i])) {
1811 network->flags |= NETWORK_HAS_CCK;
1815 RTLLIB_DEBUG_MGMT("MFIE_TYPE_RATES: '%s' (%d)\n",
1816 rates_str, network->rates_len);
1819 case MFIE_TYPE_RATES_EX:
1821 network->rates_ex_len = min(info_element->len,
1822 MAX_RATES_EX_LENGTH);
1823 for (i = 0; i < network->rates_ex_len; i++) {
1824 network->rates_ex[i] = info_element->data[i];
1825 p += snprintf(p, sizeof(rates_str) -
1826 (p - rates_str), "%02X ",
1828 if (rtllib_is_ofdm_rate
1829 (info_element->data[i])) {
1830 network->flags |= NETWORK_HAS_OFDM;
1831 if (info_element->data[i] &
1832 RTLLIB_BASIC_RATE_MASK)
1838 RTLLIB_DEBUG_MGMT("MFIE_TYPE_RATES_EX: '%s' (%d)\n",
1839 rates_str, network->rates_ex_len);
1842 case MFIE_TYPE_DS_SET:
1843 RTLLIB_DEBUG_MGMT("MFIE_TYPE_DS_SET: %d\n",
1844 info_element->data[0]);
1845 network->channel = info_element->data[0];
1848 case MFIE_TYPE_FH_SET:
1849 RTLLIB_DEBUG_MGMT("MFIE_TYPE_FH_SET: ignored\n");
1852 case MFIE_TYPE_CF_SET:
1853 RTLLIB_DEBUG_MGMT("MFIE_TYPE_CF_SET: ignored\n");
1857 if (info_element->len < 4)
1860 network->tim.tim_count = info_element->data[0];
1861 network->tim.tim_period = info_element->data[1];
1863 network->dtim_period = info_element->data[1];
1864 if (ieee->state != RTLLIB_LINKED)
1866 network->last_dtim_sta_time = jiffies;
1868 network->dtim_data = RTLLIB_DTIM_VALID;
1871 if (info_element->data[2] & 1)
1872 network->dtim_data |= RTLLIB_DTIM_MBCAST;
1874 offset = (info_element->data[2] >> 1)*2;
1877 if (ieee->assoc_id < 8*offset ||
1878 ieee->assoc_id > 8*(offset + info_element->len - 3))
1881 offset = (ieee->assoc_id / 8) - offset;
1882 if (info_element->data[3 + offset] &
1883 (1 << (ieee->assoc_id % 8)))
1884 network->dtim_data |= RTLLIB_DTIM_UCAST;
1886 network->listen_interval = network->dtim_period;
1890 network->erp_value = info_element->data[0];
1891 network->flags |= NETWORK_HAS_ERP_VALUE;
1892 RTLLIB_DEBUG_MGMT("MFIE_TYPE_ERP_SET: %d\n",
1893 network->erp_value);
1895 case MFIE_TYPE_IBSS_SET:
1896 network->atim_window = info_element->data[0];
1897 RTLLIB_DEBUG_MGMT("MFIE_TYPE_IBSS_SET: %d\n",
1898 network->atim_window);
1901 case MFIE_TYPE_CHALLENGE:
1902 RTLLIB_DEBUG_MGMT("MFIE_TYPE_CHALLENGE: ignored\n");
1905 case MFIE_TYPE_GENERIC:
1906 RTLLIB_DEBUG_MGMT("MFIE_TYPE_GENERIC: %d bytes\n",
1908 if (!rtllib_parse_qos_info_param_IE(info_element,
1911 if (info_element->len >= 4 &&
1912 info_element->data[0] == 0x00 &&
1913 info_element->data[1] == 0x50 &&
1914 info_element->data[2] == 0xf2 &&
1915 info_element->data[3] == 0x01) {
1916 network->wpa_ie_len = min(info_element->len + 2,
1918 memcpy(network->wpa_ie, info_element,
1919 network->wpa_ie_len);
1922 if (info_element->len == 7 &&
1923 info_element->data[0] == 0x00 &&
1924 info_element->data[1] == 0xe0 &&
1925 info_element->data[2] == 0x4c &&
1926 info_element->data[3] == 0x01 &&
1927 info_element->data[4] == 0x02)
1928 network->Turbo_Enable = 1;
1930 if (tmp_htcap_len == 0) {
1931 if (info_element->len >= 4 &&
1932 info_element->data[0] == 0x00 &&
1933 info_element->data[1] == 0x90 &&
1934 info_element->data[2] == 0x4c &&
1935 info_element->data[3] == 0x033) {
1937 tmp_htcap_len = min(info_element->len, (u8)MAX_IE_LEN);
1938 if (tmp_htcap_len != 0) {
1939 network->bssht.bdHTSpecVer = HT_SPEC_VER_EWC;
1940 network->bssht.bdHTCapLen = tmp_htcap_len > sizeof(network->bssht.bdHTCapBuf) ?
1941 sizeof(network->bssht.bdHTCapBuf) : tmp_htcap_len;
1942 memcpy(network->bssht.bdHTCapBuf, info_element->data, network->bssht.bdHTCapLen);
1945 if (tmp_htcap_len != 0) {
1946 network->bssht.bdSupportHT = true;
1947 network->bssht.bdHT1R = ((((struct ht_capab_ele *)(network->bssht.bdHTCapBuf))->MCS[1]) == 0);
1949 network->bssht.bdSupportHT = false;
1950 network->bssht.bdHT1R = false;
1955 if (tmp_htinfo_len == 0) {
1956 if (info_element->len >= 4 &&
1957 info_element->data[0] == 0x00 &&
1958 info_element->data[1] == 0x90 &&
1959 info_element->data[2] == 0x4c &&
1960 info_element->data[3] == 0x034) {
1961 tmp_htinfo_len = min(info_element->len, (u8)MAX_IE_LEN);
1962 if (tmp_htinfo_len != 0) {
1963 network->bssht.bdHTSpecVer = HT_SPEC_VER_EWC;
1964 if (tmp_htinfo_len) {
1965 network->bssht.bdHTInfoLen = tmp_htinfo_len > sizeof(network->bssht.bdHTInfoBuf) ?
1966 sizeof(network->bssht.bdHTInfoBuf) : tmp_htinfo_len;
1967 memcpy(network->bssht.bdHTInfoBuf, info_element->data, network->bssht.bdHTInfoLen);
1975 if (ieee->aggregation) {
1976 if (network->bssht.bdSupportHT) {
1977 if (info_element->len >= 4 &&
1978 info_element->data[0] == 0x00 &&
1979 info_element->data[1] == 0xe0 &&
1980 info_element->data[2] == 0x4c &&
1981 info_element->data[3] == 0x02) {
1982 ht_realtek_agg_len = min(info_element->len, (u8)MAX_IE_LEN);
1983 memcpy(ht_realtek_agg_buf, info_element->data, info_element->len);
1985 if (ht_realtek_agg_len >= 5) {
1986 network->realtek_cap_exit = true;
1987 network->bssht.bdRT2RTAggregation = true;
1989 if ((ht_realtek_agg_buf[4] == 1) && (ht_realtek_agg_buf[5] & 0x02))
1990 network->bssht.bdRT2RTLongSlotTime = true;
1992 if ((ht_realtek_agg_buf[4] == 1) && (ht_realtek_agg_buf[5] & RT_HT_CAP_USE_92SE))
1993 network->bssht.RT2RT_HT_Mode |= RT_HT_CAP_USE_92SE;
1996 if (ht_realtek_agg_len >= 5) {
1997 if ((ht_realtek_agg_buf[5] & RT_HT_CAP_USE_SOFTAP))
1998 network->bssht.RT2RT_HT_Mode |= RT_HT_CAP_USE_SOFTAP;
2002 if ((info_element->len >= 3 &&
2003 info_element->data[0] == 0x00 &&
2004 info_element->data[1] == 0x05 &&
2005 info_element->data[2] == 0xb5) ||
2006 (info_element->len >= 3 &&
2007 info_element->data[0] == 0x00 &&
2008 info_element->data[1] == 0x0a &&
2009 info_element->data[2] == 0xf7) ||
2010 (info_element->len >= 3 &&
2011 info_element->data[0] == 0x00 &&
2012 info_element->data[1] == 0x10 &&
2013 info_element->data[2] == 0x18)) {
2014 network->broadcom_cap_exist = true;
2016 if (info_element->len >= 3 &&
2017 info_element->data[0] == 0x00 &&
2018 info_element->data[1] == 0x0c &&
2019 info_element->data[2] == 0x43)
2020 network->ralink_cap_exist = true;
2021 if ((info_element->len >= 3 &&
2022 info_element->data[0] == 0x00 &&
2023 info_element->data[1] == 0x03 &&
2024 info_element->data[2] == 0x7f) ||
2025 (info_element->len >= 3 &&
2026 info_element->data[0] == 0x00 &&
2027 info_element->data[1] == 0x13 &&
2028 info_element->data[2] == 0x74))
2029 network->atheros_cap_exist = true;
2031 if ((info_element->len >= 3 &&
2032 info_element->data[0] == 0x00 &&
2033 info_element->data[1] == 0x50 &&
2034 info_element->data[2] == 0x43))
2035 network->marvell_cap_exist = true;
2036 if (info_element->len >= 3 &&
2037 info_element->data[0] == 0x00 &&
2038 info_element->data[1] == 0x40 &&
2039 info_element->data[2] == 0x96)
2040 network->cisco_cap_exist = true;
2043 if (info_element->len >= 3 &&
2044 info_element->data[0] == 0x00 &&
2045 info_element->data[1] == 0x0a &&
2046 info_element->data[2] == 0xf5)
2047 network->airgo_cap_exist = true;
2049 if (info_element->len > 4 &&
2050 info_element->data[0] == 0x00 &&
2051 info_element->data[1] == 0x40 &&
2052 info_element->data[2] == 0x96 &&
2053 info_element->data[3] == 0x01) {
2054 if (info_element->len == 6) {
2055 memcpy(network->CcxRmState, &info_element[4], 2);
2056 if (network->CcxRmState[0] != 0)
2057 network->bCcxRmEnable = true;
2059 network->bCcxRmEnable = false;
2060 network->MBssidMask = network->CcxRmState[1] & 0x07;
2061 if (network->MBssidMask != 0) {
2062 network->bMBssidValid = true;
2063 network->MBssidMask = 0xff << (network->MBssidMask);
2064 memcpy(network->MBssid, network->bssid, ETH_ALEN);
2065 network->MBssid[5] &= network->MBssidMask;
2067 network->bMBssidValid = false;
2070 network->bCcxRmEnable = false;
2073 if (info_element->len > 4 &&
2074 info_element->data[0] == 0x00 &&
2075 info_element->data[1] == 0x40 &&
2076 info_element->data[2] == 0x96 &&
2077 info_element->data[3] == 0x03) {
2078 if (info_element->len == 5) {
2079 network->bWithCcxVerNum = true;
2080 network->BssCcxVerNumber = info_element->data[4];
2082 network->bWithCcxVerNum = false;
2083 network->BssCcxVerNumber = 0;
2086 if (info_element->len > 4 &&
2087 info_element->data[0] == 0x00 &&
2088 info_element->data[1] == 0x50 &&
2089 info_element->data[2] == 0xf2 &&
2090 info_element->data[3] == 0x04) {
2091 RTLLIB_DEBUG_MGMT("MFIE_TYPE_WZC: %d bytes\n",
2093 network->wzc_ie_len = min(info_element->len+2,
2095 memcpy(network->wzc_ie, info_element,
2096 network->wzc_ie_len);
2101 RTLLIB_DEBUG_MGMT("MFIE_TYPE_RSN: %d bytes\n",
2103 network->rsn_ie_len = min(info_element->len + 2,
2105 memcpy(network->rsn_ie, info_element,
2106 network->rsn_ie_len);
2109 case MFIE_TYPE_HT_CAP:
2110 RTLLIB_DEBUG_SCAN("MFIE_TYPE_HT_CAP: %d bytes\n",
2112 tmp_htcap_len = min(info_element->len, (u8)MAX_IE_LEN);
2113 if (tmp_htcap_len != 0) {
2114 network->bssht.bdHTSpecVer = HT_SPEC_VER_EWC;
2115 network->bssht.bdHTCapLen = tmp_htcap_len > sizeof(network->bssht.bdHTCapBuf) ?
2116 sizeof(network->bssht.bdHTCapBuf) : tmp_htcap_len;
2117 memcpy(network->bssht.bdHTCapBuf,
2119 network->bssht.bdHTCapLen);
2121 network->bssht.bdSupportHT = true;
2122 network->bssht.bdHT1R = ((((struct ht_capab_ele *)
2123 network->bssht.bdHTCapBuf))->MCS[1]) == 0;
2125 network->bssht.bdBandWidth = (enum ht_channel_width)
2126 (((struct ht_capab_ele *)
2127 (network->bssht.bdHTCapBuf))->ChlWidth);
2129 network->bssht.bdSupportHT = false;
2130 network->bssht.bdHT1R = false;
2131 network->bssht.bdBandWidth = HT_CHANNEL_WIDTH_20;
2136 case MFIE_TYPE_HT_INFO:
2137 RTLLIB_DEBUG_SCAN("MFIE_TYPE_HT_INFO: %d bytes\n",
2139 tmp_htinfo_len = min(info_element->len, (u8)MAX_IE_LEN);
2140 if (tmp_htinfo_len) {
2141 network->bssht.bdHTSpecVer = HT_SPEC_VER_IEEE;
2142 network->bssht.bdHTInfoLen = tmp_htinfo_len >
2143 sizeof(network->bssht.bdHTInfoBuf) ?
2144 sizeof(network->bssht.bdHTInfoBuf) :
2146 memcpy(network->bssht.bdHTInfoBuf,
2148 network->bssht.bdHTInfoLen);
2152 case MFIE_TYPE_AIRONET:
2153 RTLLIB_DEBUG_SCAN("MFIE_TYPE_AIRONET: %d bytes\n",
2155 if (info_element->len > IE_CISCO_FLAG_POSITION) {
2156 network->bWithAironetIE = true;
2158 if ((info_element->data[IE_CISCO_FLAG_POSITION]
2159 & SUPPORT_CKIP_MIC) ||
2160 (info_element->data[IE_CISCO_FLAG_POSITION]
2162 network->bCkipSupported = true;
2164 network->bCkipSupported = false;
2166 network->bWithAironetIE = false;
2167 network->bCkipSupported = false;
2170 case MFIE_TYPE_QOS_PARAMETER:
2172 "QoS Error need to parse QOS_PARAMETER IE\n");
2175 case MFIE_TYPE_COUNTRY:
2176 RTLLIB_DEBUG_SCAN("MFIE_TYPE_COUNTRY: %d bytes\n",
2178 rtllib_extract_country_ie(ieee, info_element, network,
2184 ("Unsupported info element: %s (%d)\n",
2185 get_info_element_string(info_element->id),
2190 length -= sizeof(*info_element) + info_element->len;
2192 (struct rtllib_info_element *)&info_element->
2193 data[info_element->len];
2196 if (!network->atheros_cap_exist && !network->broadcom_cap_exist &&
2197 !network->cisco_cap_exist && !network->ralink_cap_exist &&
2198 !network->bssht.bdRT2RTAggregation)
2199 network->unknown_cap_exist = true;
2201 network->unknown_cap_exist = false;
2205 static inline u8 rtllib_SignalStrengthTranslate(u8 CurrSS)
2209 if (CurrSS >= 71 && CurrSS <= 100)
2210 RetSS = 90 + ((CurrSS - 70) / 3);
2211 else if (CurrSS >= 41 && CurrSS <= 70)
2212 RetSS = 78 + ((CurrSS - 40) / 3);
2213 else if (CurrSS >= 31 && CurrSS <= 40)
2214 RetSS = 66 + (CurrSS - 30);
2215 else if (CurrSS >= 21 && CurrSS <= 30)
2216 RetSS = 54 + (CurrSS - 20);
2217 else if (CurrSS >= 5 && CurrSS <= 20)
2218 RetSS = 42 + (((CurrSS - 5) * 2) / 3);
2219 else if (CurrSS == 4)
2221 else if (CurrSS == 3)
2223 else if (CurrSS == 2)
2225 else if (CurrSS == 1)
2233 static long rtllib_translate_todbm(u8 signal_strength_index)
2237 signal_power = (long)((signal_strength_index + 1) >> 1);
2240 return signal_power;
2243 static inline int rtllib_network_init(
2244 struct rtllib_device *ieee,
2245 struct rtllib_probe_response *beacon,
2246 struct rtllib_network *network,
2247 struct rtllib_rx_stats *stats)
2251 network->qos_data.active = 0;
2252 network->qos_data.supported = 0;
2253 network->qos_data.param_count = 0;
2254 network->qos_data.old_param_count = 0;
2256 memset(&network->qos_data, 0, sizeof(struct rtllib_qos_data));
2258 /* Pull out fixed field data */
2259 memcpy(network->bssid, beacon->header.addr3, ETH_ALEN);
2260 network->capability = le16_to_cpu(beacon->capability);
2261 network->last_scanned = jiffies;
2262 network->time_stamp[0] = le32_to_cpu(beacon->time_stamp[0]);
2263 network->time_stamp[1] = le32_to_cpu(beacon->time_stamp[1]);
2264 network->beacon_interval = le32_to_cpu(beacon->beacon_interval);
2265 /* Where to pull this? beacon->listen_interval;*/
2266 network->listen_interval = 0x0A;
2267 network->rates_len = network->rates_ex_len = 0;
2268 network->last_associate = 0;
2269 network->ssid_len = 0;
2270 network->hidden_ssid_len = 0;
2271 memset(network->hidden_ssid, 0, sizeof(network->hidden_ssid));
2273 network->atim_window = 0;
2274 network->erp_value = (network->capability & WLAN_CAPABILITY_IBSS) ?
2276 network->berp_info_valid = false;
2277 network->broadcom_cap_exist = false;
2278 network->ralink_cap_exist = false;
2279 network->atheros_cap_exist = false;
2280 network->cisco_cap_exist = false;
2281 network->unknown_cap_exist = false;
2282 network->realtek_cap_exit = false;
2283 network->marvell_cap_exist = false;
2284 network->airgo_cap_exist = false;
2285 network->Turbo_Enable = 0;
2286 network->SignalStrength = stats->SignalStrength;
2287 network->RSSI = stats->SignalStrength;
2288 network->CountryIeLen = 0;
2289 memset(network->CountryIeBuf, 0, MAX_IE_LEN);
2290 HTInitializeBssDesc(&network->bssht);
2291 if (stats->freq == RTLLIB_52GHZ_BAND) {
2292 /* for A band (No DS info) */
2293 network->channel = stats->received_channel;
2295 network->flags |= NETWORK_HAS_CCK;
2297 network->wpa_ie_len = 0;
2298 network->rsn_ie_len = 0;
2299 network->wzc_ie_len = 0;
2301 if (rtllib_parse_info_param(ieee,
2302 beacon->info_element,
2303 (stats->len - sizeof(*beacon)),
2309 if (stats->freq == RTLLIB_52GHZ_BAND)
2310 network->mode = IEEE_A;
2312 if (network->flags & NETWORK_HAS_OFDM)
2313 network->mode |= IEEE_G;
2314 if (network->flags & NETWORK_HAS_CCK)
2315 network->mode |= IEEE_B;
2318 if (network->mode == 0) {
2319 RTLLIB_DEBUG_SCAN("Filtered out '%s (%pM)' "
2321 escape_essid(network->ssid,
2327 if (network->bssht.bdSupportHT) {
2328 if (network->mode == IEEE_A)
2329 network->mode = IEEE_N_5G;
2330 else if (network->mode & (IEEE_G | IEEE_B))
2331 network->mode = IEEE_N_24G;
2333 if (rtllib_is_empty_essid(network->ssid, network->ssid_len))
2334 network->flags |= NETWORK_EMPTY_ESSID;
2335 stats->signal = 30 + (stats->SignalStrength * 70) / 100;
2336 stats->noise = rtllib_translate_todbm((u8)(100-stats->signal)) - 25;
2338 memcpy(&network->stats, stats, sizeof(network->stats));
2343 static inline int is_same_network(struct rtllib_network *src,
2344 struct rtllib_network *dst, u8 ssidbroad)
2346 /* A network is only a duplicate if the channel, BSSID, ESSID
2347 * and the capability field (in particular IBSS and BSS) all match.
2348 * We treat all <hidden> with the same BSSID and channel
2350 return (((src->ssid_len == dst->ssid_len) || (!ssidbroad)) &&
2351 (src->channel == dst->channel) &&
2352 !memcmp(src->bssid, dst->bssid, ETH_ALEN) &&
2353 (!memcmp(src->ssid, dst->ssid, src->ssid_len) ||
2355 ((src->capability & WLAN_CAPABILITY_IBSS) ==
2356 (dst->capability & WLAN_CAPABILITY_IBSS)) &&
2357 ((src->capability & WLAN_CAPABILITY_ESS) ==
2358 (dst->capability & WLAN_CAPABILITY_ESS)));
2361 static inline void update_ibss_network(struct rtllib_network *dst,
2362 struct rtllib_network *src)
2364 memcpy(&dst->stats, &src->stats, sizeof(struct rtllib_rx_stats));
2365 dst->last_scanned = jiffies;
2369 static inline void update_network(struct rtllib_network *dst,
2370 struct rtllib_network *src)
2375 memcpy(&dst->stats, &src->stats, sizeof(struct rtllib_rx_stats));
2376 dst->capability = src->capability;
2377 memcpy(dst->rates, src->rates, src->rates_len);
2378 dst->rates_len = src->rates_len;
2379 memcpy(dst->rates_ex, src->rates_ex, src->rates_ex_len);
2380 dst->rates_ex_len = src->rates_ex_len;
2381 if (src->ssid_len > 0) {
2382 if (dst->ssid_len == 0) {
2383 memset(dst->hidden_ssid, 0, sizeof(dst->hidden_ssid));
2384 dst->hidden_ssid_len = src->ssid_len;
2385 memcpy(dst->hidden_ssid, src->ssid, src->ssid_len);
2387 memset(dst->ssid, 0, dst->ssid_len);
2388 dst->ssid_len = src->ssid_len;
2389 memcpy(dst->ssid, src->ssid, src->ssid_len);
2392 dst->mode = src->mode;
2393 dst->flags = src->flags;
2394 dst->time_stamp[0] = src->time_stamp[0];
2395 dst->time_stamp[1] = src->time_stamp[1];
2396 if (src->flags & NETWORK_HAS_ERP_VALUE) {
2397 dst->erp_value = src->erp_value;
2398 dst->berp_info_valid = src->berp_info_valid = true;
2400 dst->beacon_interval = src->beacon_interval;
2401 dst->listen_interval = src->listen_interval;
2402 dst->atim_window = src->atim_window;
2403 dst->dtim_period = src->dtim_period;
2404 dst->dtim_data = src->dtim_data;
2405 dst->last_dtim_sta_time = src->last_dtim_sta_time;
2406 memcpy(&dst->tim, &src->tim, sizeof(struct rtllib_tim_parameters));
2408 dst->bssht.bdSupportHT = src->bssht.bdSupportHT;
2409 dst->bssht.bdRT2RTAggregation = src->bssht.bdRT2RTAggregation;
2410 dst->bssht.bdHTCapLen = src->bssht.bdHTCapLen;
2411 memcpy(dst->bssht.bdHTCapBuf, src->bssht.bdHTCapBuf,
2412 src->bssht.bdHTCapLen);
2413 dst->bssht.bdHTInfoLen = src->bssht.bdHTInfoLen;
2414 memcpy(dst->bssht.bdHTInfoBuf, src->bssht.bdHTInfoBuf,
2415 src->bssht.bdHTInfoLen);
2416 dst->bssht.bdHTSpecVer = src->bssht.bdHTSpecVer;
2417 dst->bssht.bdRT2RTLongSlotTime = src->bssht.bdRT2RTLongSlotTime;
2418 dst->broadcom_cap_exist = src->broadcom_cap_exist;
2419 dst->ralink_cap_exist = src->ralink_cap_exist;
2420 dst->atheros_cap_exist = src->atheros_cap_exist;
2421 dst->realtek_cap_exit = src->realtek_cap_exit;
2422 dst->marvell_cap_exist = src->marvell_cap_exist;
2423 dst->cisco_cap_exist = src->cisco_cap_exist;
2424 dst->airgo_cap_exist = src->airgo_cap_exist;
2425 dst->unknown_cap_exist = src->unknown_cap_exist;
2426 memcpy(dst->wpa_ie, src->wpa_ie, src->wpa_ie_len);
2427 dst->wpa_ie_len = src->wpa_ie_len;
2428 memcpy(dst->rsn_ie, src->rsn_ie, src->rsn_ie_len);
2429 dst->rsn_ie_len = src->rsn_ie_len;
2430 memcpy(dst->wzc_ie, src->wzc_ie, src->wzc_ie_len);
2431 dst->wzc_ie_len = src->wzc_ie_len;
2433 dst->last_scanned = jiffies;
2434 /* qos related parameters */
2435 qos_active = dst->qos_data.active;
2436 old_param = dst->qos_data.param_count;
2437 dst->qos_data.supported = src->qos_data.supported;
2438 if (dst->flags & NETWORK_HAS_QOS_PARAMETERS)
2439 memcpy(&dst->qos_data, &src->qos_data,
2440 sizeof(struct rtllib_qos_data));
2441 if (dst->qos_data.supported == 1) {
2444 ("QoS the network %s is QoS supported\n",
2448 ("QoS the network is QoS supported\n");
2450 dst->qos_data.active = qos_active;
2451 dst->qos_data.old_param_count = old_param;
2453 /* dst->last_associate is not overwritten */
2454 dst->wmm_info = src->wmm_info;
2455 if (src->wmm_param[0].ac_aci_acm_aifsn ||
2456 src->wmm_param[1].ac_aci_acm_aifsn ||
2457 src->wmm_param[2].ac_aci_acm_aifsn ||
2458 src->wmm_param[1].ac_aci_acm_aifsn)
2459 memcpy(dst->wmm_param, src->wmm_param, WME_AC_PRAM_LEN);
2461 dst->SignalStrength = src->SignalStrength;
2462 dst->RSSI = src->RSSI;
2463 dst->Turbo_Enable = src->Turbo_Enable;
2465 dst->CountryIeLen = src->CountryIeLen;
2466 memcpy(dst->CountryIeBuf, src->CountryIeBuf, src->CountryIeLen);
2468 dst->bWithAironetIE = src->bWithAironetIE;
2469 dst->bCkipSupported = src->bCkipSupported;
2470 memcpy(dst->CcxRmState, src->CcxRmState, 2);
2471 dst->bCcxRmEnable = src->bCcxRmEnable;
2472 dst->MBssidMask = src->MBssidMask;
2473 dst->bMBssidValid = src->bMBssidValid;
2474 memcpy(dst->MBssid, src->MBssid, 6);
2475 dst->bWithCcxVerNum = src->bWithCcxVerNum;
2476 dst->BssCcxVerNumber = src->BssCcxVerNumber;
2479 static inline int is_beacon(__le16 fc)
2481 return (WLAN_FC_GET_STYPE(le16_to_cpu(fc)) == RTLLIB_STYPE_BEACON);
2484 static int IsPassiveChannel(struct rtllib_device *rtllib, u8 channel)
2486 if (MAX_CHANNEL_NUMBER < channel) {
2487 printk(KERN_INFO "%s(): Invalid Channel\n", __func__);
2491 if (rtllib->active_channel_map[channel] == 2)
2497 int IsLegalChannel(struct rtllib_device *rtllib, u8 channel)
2499 if (MAX_CHANNEL_NUMBER < channel) {
2500 printk(KERN_INFO "%s(): Invalid Channel\n", __func__);
2503 if (rtllib->active_channel_map[channel] > 0)
2509 static inline void rtllib_process_probe_response(
2510 struct rtllib_device *ieee,
2511 struct rtllib_probe_response *beacon,
2512 struct rtllib_rx_stats *stats)
2514 struct rtllib_network *target;
2515 struct rtllib_network *oldest = NULL;
2516 struct rtllib_info_element *info_element = &beacon->info_element[0];
2517 unsigned long flags;
2519 struct rtllib_network *network = kzalloc(sizeof(struct rtllib_network),
2526 "'%s' ( %pM ): %c%c%c%c %c%c%c%c-%c%c%c%c %c%c%c%c\n",
2527 escape_essid(info_element->data, info_element->len),
2528 beacon->header.addr3,
2529 (beacon->capability & (1<<0xf)) ? '1' : '0',
2530 (beacon->capability & (1<<0xe)) ? '1' : '0',
2531 (beacon->capability & (1<<0xd)) ? '1' : '0',
2532 (beacon->capability & (1<<0xc)) ? '1' : '0',
2533 (beacon->capability & (1<<0xb)) ? '1' : '0',
2534 (beacon->capability & (1<<0xa)) ? '1' : '0',
2535 (beacon->capability & (1<<0x9)) ? '1' : '0',
2536 (beacon->capability & (1<<0x8)) ? '1' : '0',
2537 (beacon->capability & (1<<0x7)) ? '1' : '0',
2538 (beacon->capability & (1<<0x6)) ? '1' : '0',
2539 (beacon->capability & (1<<0x5)) ? '1' : '0',
2540 (beacon->capability & (1<<0x4)) ? '1' : '0',
2541 (beacon->capability & (1<<0x3)) ? '1' : '0',
2542 (beacon->capability & (1<<0x2)) ? '1' : '0',
2543 (beacon->capability & (1<<0x1)) ? '1' : '0',
2544 (beacon->capability & (1<<0x0)) ? '1' : '0');
2546 if (rtllib_network_init(ieee, beacon, network, stats)) {
2547 RTLLIB_DEBUG_SCAN("Dropped '%s' ( %pM) via %s.\n",
2548 escape_essid(info_element->data,
2550 beacon->header.addr3,
2551 WLAN_FC_GET_STYPE(beacon->header.frame_ctl) ==
2552 RTLLIB_STYPE_PROBE_RESP ?
2553 "PROBE RESPONSE" : "BEACON");
2558 if (!IsLegalChannel(ieee, network->channel))
2561 if (WLAN_FC_GET_STYPE(beacon->header.frame_ctl) ==
2562 RTLLIB_STYPE_PROBE_RESP) {
2563 if (IsPassiveChannel(ieee, network->channel)) {
2564 printk(KERN_INFO "GetScanInfo(): For Global Domain, "
2565 "filter probe response at channel(%d).\n",
2571 /* The network parsed correctly -- so now we scan our known networks
2572 * to see if we can find it in our list.
2574 * NOTE: This search is definitely not optimized. Once its doing
2575 * the "right thing" we'll optimize it for efficiency if
2578 /* Search for this entry in the list and update it if it is
2581 spin_lock_irqsave(&ieee->lock, flags);
2582 if (is_same_network(&ieee->current_network, network,
2583 (network->ssid_len ? 1 : 0))) {
2584 update_network(&ieee->current_network, network);
2585 if ((ieee->current_network.mode == IEEE_N_24G ||
2586 ieee->current_network.mode == IEEE_G)
2587 && ieee->current_network.berp_info_valid) {
2588 if (ieee->current_network.erp_value & ERP_UseProtection)
2589 ieee->current_network.buseprotection = true;
2591 ieee->current_network.buseprotection = false;
2593 if (is_beacon(beacon->header.frame_ctl)) {
2594 if (ieee->state >= RTLLIB_LINKED)
2595 ieee->LinkDetectInfo.NumRecvBcnInPeriod++;
2598 list_for_each_entry(target, &ieee->network_list, list) {
2599 if (is_same_network(target, network,
2600 (target->ssid_len ? 1 : 0)))
2602 if ((oldest == NULL) ||
2603 (target->last_scanned < oldest->last_scanned))
2607 /* If we didn't find a match, then get a new network slot to initialize
2608 * with this beacon's information */
2609 if (&target->list == &ieee->network_list) {
2610 if (list_empty(&ieee->network_free_list)) {
2611 /* If there are no more slots, expire the oldest */
2612 list_del(&oldest->list);
2614 RTLLIB_DEBUG_SCAN("Expired '%s' ( %pM) from "
2616 escape_essid(target->ssid,
2620 /* Otherwise just pull from the free list */
2621 target = list_entry(ieee->network_free_list.next,
2622 struct rtllib_network, list);
2623 list_del(ieee->network_free_list.next);
2627 RTLLIB_DEBUG_SCAN("Adding '%s' ( %pM) via %s.\n",
2628 escape_essid(network->ssid,
2629 network->ssid_len), network->bssid,
2630 WLAN_FC_GET_STYPE(beacon->header.frame_ctl) ==
2631 RTLLIB_STYPE_PROBE_RESP ?
2632 "PROBE RESPONSE" : "BEACON");
2633 memcpy(target, network, sizeof(*target));
2634 list_add_tail(&target->list, &ieee->network_list);
2635 if (ieee->softmac_features & IEEE_SOFTMAC_ASSOCIATE)
2636 rtllib_softmac_new_net(ieee, network);
2638 RTLLIB_DEBUG_SCAN("Updating '%s' ( %pM) via %s.\n",
2639 escape_essid(target->ssid,
2640 target->ssid_len), target->bssid,
2641 WLAN_FC_GET_STYPE(beacon->header.frame_ctl) ==
2642 RTLLIB_STYPE_PROBE_RESP ?
2643 "PROBE RESPONSE" : "BEACON");
2645 /* we have an entry and we are going to update it. But this
2646 * entry may be already expired. In this case we do the same
2647 * as we found a new net and call the new_net handler
2649 renew = !time_after(target->last_scanned + ieee->scan_age,
2651 if ((!target->ssid_len) &&
2652 (((network->ssid_len > 0) && (target->hidden_ssid_len == 0))
2653 || ((ieee->current_network.ssid_len == network->ssid_len) &&
2654 (strncmp(ieee->current_network.ssid, network->ssid,
2655 network->ssid_len) == 0) &&
2656 (ieee->state == RTLLIB_NOLINK))))
2658 update_network(target, network);
2659 if (renew && (ieee->softmac_features & IEEE_SOFTMAC_ASSOCIATE))
2660 rtllib_softmac_new_net(ieee, network);
2663 spin_unlock_irqrestore(&ieee->lock, flags);
2664 if (is_beacon(beacon->header.frame_ctl) &&
2665 is_same_network(&ieee->current_network, network,
2666 (network->ssid_len ? 1 : 0)) &&
2667 (ieee->state == RTLLIB_LINKED)) {
2668 if (ieee->handle_beacon != NULL)
2669 ieee->handle_beacon(ieee->dev, beacon,
2670 &ieee->current_network);
2677 void rtllib_rx_mgt(struct rtllib_device *ieee,
2678 struct sk_buff *skb,
2679 struct rtllib_rx_stats *stats)
2681 struct rtllib_hdr_4addr *header = (struct rtllib_hdr_4addr *)skb->data ;
2683 if (WLAN_FC_GET_STYPE(header->frame_ctl) != RTLLIB_STYPE_PROBE_RESP &&
2684 WLAN_FC_GET_STYPE(header->frame_ctl) != RTLLIB_STYPE_BEACON)
2685 ieee->last_rx_ps_time = jiffies;
2687 switch (WLAN_FC_GET_STYPE(header->frame_ctl)) {
2689 case RTLLIB_STYPE_BEACON:
2690 RTLLIB_DEBUG_MGMT("received BEACON (%d)\n",
2691 WLAN_FC_GET_STYPE(header->frame_ctl));
2692 RTLLIB_DEBUG_SCAN("Beacon\n");
2693 rtllib_process_probe_response(
2694 ieee, (struct rtllib_probe_response *)header,
2697 if (ieee->sta_sleep || (ieee->ps != RTLLIB_PS_DISABLED &&
2698 ieee->iw_mode == IW_MODE_INFRA &&
2699 ieee->state == RTLLIB_LINKED))
2700 tasklet_schedule(&ieee->ps_task);
2704 case RTLLIB_STYPE_PROBE_RESP:
2705 RTLLIB_DEBUG_MGMT("received PROBE RESPONSE (%d)\n",
2706 WLAN_FC_GET_STYPE(header->frame_ctl));
2707 RTLLIB_DEBUG_SCAN("Probe response\n");
2708 rtllib_process_probe_response(ieee,
2709 (struct rtllib_probe_response *)header, stats);
2711 case RTLLIB_STYPE_PROBE_REQ:
2712 RTLLIB_DEBUG_MGMT("received PROBE RESQUEST (%d)\n",
2713 WLAN_FC_GET_STYPE(header->frame_ctl));
2714 RTLLIB_DEBUG_SCAN("Probe request\n");
2715 if ((ieee->softmac_features & IEEE_SOFTMAC_PROBERS) &&
2716 ((ieee->iw_mode == IW_MODE_ADHOC ||
2717 ieee->iw_mode == IW_MODE_MASTER) &&
2718 ieee->state == RTLLIB_LINKED))
2719 rtllib_rx_probe_rq(ieee, skb);